Volcanic Cave Tours on Terceira with AzorBus
Difficulty
moderate
Duration
3 hours
Fitness Level
Participants should be comfortable walking on uneven terrain, including lava rock and narrow cave passages, with moderate physical stamina.
Overview
Venture beneath Terceira’s volcanic surface with AzorBus’s guided three-hour tour through the Algar do Carvão and Gruta do Natal caves. Experience the island’s volcanic heritage up close in Angra do Heroísmo.
Adventure Tips
Wear sturdy footwear
Uneven lava rock floors and gravel paths require comfortable, stable shoes to navigate safely.
Bring a light jacket
Cave interiors stay cool year-round, so layering helps maintain comfort.
Carry water and sun protection
While much of the trip is indoors or shaded, the outdoor segments can be exposed on sunny days.
Be prepared for limited accessibility
This tour involves uneven terrain and is not wheelchair accessible; children should be accompanied by adults.
Local Insights
Wildlife
- native Azorean ducks at Lagoa das Patas
- small bats within the cave systems
History
Algar do Carvão is a volcanic chimney formed thousands of years ago and is one of the few accessible open volcanic vents in the world, reflecting the Azores’ dramatic geologic history.
Conservation
The tours follow strict regulations preserving cave ecosystems, minimizing human impact through guided access and visitor limits.
Frequently Asked Questions
Recommended Gear
Sturdy hiking shoes
Provides traction and support for navigating rocky and uneven cave floors.
Light jacket or fleece
Keeps you comfortable in cool cave interiors and during breezy outdoor stops.
all specific
Water bottle
Staying hydrated is key, especially when walking exposed sections outside.
summer|spring|fall specific
Headlamp or flashlight
Useful for additional lighting inside darker parts of caves, though guides provide helmets with lighting.